JeanLuc BIARROTTE CNRSIN2P3 IPN Orsay

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RD on HPPA (High-Power Proton Accelerators)
_at_ IN2P3

• Jean-Luc BIARROTTE CNRS-IN2P3 / IPN Orsay
• EUROTRANS-DM1 Accelerator group

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Some on-going HPPA-based projects in Europe
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Example n1 LHC upgrade
Courtesy of R. Garoby F. Gerigk
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IN2P3 contribution to LINAC4 / SPL

• LINAC 4
• RD effort on the injector side, through the
  IPHI project
• Prototyping of a normal conducting SCL cavity
  for the 100-160 MeV section
• Proposal of an alternative superconducting
  design for the 100-160 MeV section, using
  Triple-Spoke cavities, and associated RD
• Beam dynamics calculations error studies
• SPL
• Prototyping of a superconducting elliptical
  cavity for the 160 640 MeV section
• Design of the high-energy cryomodules for the
  640 MeV 4 GeV section

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Exemple n2 EURISOL
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IN2P3 contribution to EURISOL

• Accelerator general design (Tasks 6, 7)
• Proton driver accelerator design
• Heavy-ion post-accelerator design
• Includes beam dynamics simulations, cost
  estimates...
• Superconducting cavity development (Task 8)
• Development of superconducting Spoke cavities
• Prototyping of auxiliary elements
• Beta-beams aspects (Task 12)
• Design of the Rapid Cycling Synchrotron

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Exemple n3 SPIRAL-2
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IN2P3 contribution to SPIRAL-2

• Accelerator design beam dynamics
• q/A1/3 ECR ion source
• 14 beta0.12 QWR cryomodules (cavities
  couplers)
• Cryogenic system
• Beam diagnostics...

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Exemple n4 MYRRHA / XT-ADS

• EURopean research programme for the TRANSmutation
  of high level nuclear waste in an Accelerator
  Driven System
• EU FP6 programme (2005-2010)
• 31 research agencies industries, 16
  universities
• Expands the EU FP5 project PDS-XADS (2001-2004)
• 5 Domains (DM1Design, ...)

• Main GOAL of the EUROTRANS programme
• Advanced design of a 50-100 MWth eXperimental
  facility demonstrating the technical feasibility
  of Transmutation on an ADS (MYRRHA / XT-ADS,
  short-term realisation)
• Generic conceptual design (several 100 MWth) of a
  European Facility for Industrial Transmutation
  (EFIT, long-term realisation)

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European Transmutation Demonstration

• 1. XT-ADS (ADS prototype)
• Goals
• Demonstrate the concept (coupling between
  accelerator, spallation target reactor),
• Demonstrate the transmutation
• Provide an irradiation facility and an EFIT test
  bench
• Features
• 50-100 MWth power
• Keff around 0.95
• 600 MeV, 2.5 mA proton beam (or 350 MeV, 5 mA)
• Conventional MOX fuel
• Lead-Bismuth Eutectic coolant

• 2. EFIT (Industrial Transmuter)
• Goals
• Maximise the transmutation efficiency
• Easiness of operation and maintenance
• High level of availability for a cost-effective
  transmutation
• Features
• Several 100 MWth power
• Keff around 0.97
• 800 MeV, 20 mA proton beam
• Minor Actinide fuel
• Lead coolant (gas as back-up solution)

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ADS accelerator main specifications
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Reliability aspects

• Beam trips longer than 1 sec are forbidden to
  avoid thermal stresses fatigue on the ADS
  target, fuel assembly less than 5 per 3-month
  operation cycle (XT-ADS)
• Reliability guidelines have been followed during
  the ADS accelerator design
• Strong component design derating
• All components are derated with respect to
  technological limitations
• For every linac main component, a prototype is
  being designed, built and tested within the
  EUROTRANS programme
• Inclusion of redundancies in critical areas
• Front-end duplication, solid-state RF power
  amplifiers where possible
• Capability of fault-tolerant operation
• Expected in the highly modular superconducting RF
  linac (from ?20 MeV)
• Implies reliable and sophisticated digital RF
  control systems

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ADS accelerator reference conceptual scheme
(2005)
Superconducting linac Highly modular and
upgradeable (same concept for prototype
industrial scale) Excellent potential for
reliability High efficiency (optimized
operation cost)
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5 reliability-oriented accelerator tasks

• Task n1 Experimental evaluation of the proton
  injector reliability
• Task n2 Assessment of the reliability
  performances of the intermediate-energy
  acceleration components
• Task n3 Qualification of the reliability
  performances of a high-energy cryomodule at full
  power and nominal temperature
• Task n4 Design of a prototypical RF control
  system for fault-tolerant operation of the linear
  accelerator
• Task n5 Overall coherence of the accelerator
  design, final reliability analysis, cost
  estimation for XT-ADS EFIT

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Front end The IPHI source RFQ

• SILHI Source operational (100 mA, 95 kV)
• LEBT tuned
• Fabrication of RFQ on-going
• Installation of RFQ environment achieved
• Installation of diagnostic beam line achieved
• GOAL real scale long reliability test run

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Superconducting linac - Spoke cavities

• Test of a fully equipped 350 MHz spoke cavity
• ? 0.15 spoke cavity prototype constructed and
  tested in vertical cryostat
• low power tests in the horizontal cryostat CM0
• power couplers constructed, to be conditionned
• cold tuner validated w/ piezos

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Superconducting linac - Spoke cavities

• Digital low level RF system development for
  fault-tolerance
• 10 kW intrinsically redundant RF amplifier
  available (Solid State technology)
• Horizontal test in CM0 at high power in 2009

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Superconducting linac - High-energy cryomodule

• Design, fabrication test of an elliptical
  module
• ? 0.47 prototype constructed and tested
• tuner system fabrication achieved
• cryomodule under fabrication

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Superconducting linac - High-energy cryomodule

• at nominal power
• 150 kW CW RF power coupler under fabrication
• 700 MHz RF power source (IOT 80 kW) received
• cryomodule test at high power in end 2009

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The new Orsay SUPRATECH test facility
SUPRATECH at Building 106, IPN Orsay

• Clean room operational
• He liquefier available (under test)
• Refrigeration system installed
• Chemical facility under construction
• Experimental hall under installation

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Towards an advanced reference design (2010)
GOAL frozen advanced reference design in 2010
IN-WORK
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Main European partners on HPPA RD
in Spain CIEMAT, Empresarios Agrupados, UPM,
ESS Bilbao initiative